C. Elfakir, P. Chaimbault, M. Dreux
Dec 1, 1998
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0
Influential Citations
58
Citations
Journal
Journal of Chromatography A
Abstract
Abstract Different volatile carboxylic acids have been investigated as electronic competitors to optimize the separation of 12 common anions (F − , H 2 PO 4 − , Cl − , IO 3 − , IO 4 − , Br − , BrO 3 − , SO 4 2− , ClO 3 − , NO 3 − , I − , ClO 4 − ) on a porous graphitic carbon (PGC) column with evaporative light scattering detection. The addition of pyridine in the aqueous acidic mobile phase improves the efficiency of the separation and the detector response. The retention of inorganic anions on non-modified PGC is dominated by electronic interactions based purely on donor–acceptor (charge transfer) interaction between the lone pair electrons of the solute and the π-electrons of the PGC.